Machine for uniting the end flaps of paper boxes.



N0. 7|D,930. Patented out. 7,1902;

G. R. WYMAN. MACHINE FOR UNITING THE END FLAPS OF PAPER BOXES.

(Applicnion filed Mar. 20, 1901.

(No Model.) 2 Sheets-Sheet l.

- Patented Oct. 7, I902;

No. name.

' a. n. WYMAN.

MACHINE FUR UNITING THE END FLAPS DE PAPER BOXES.

(Application filed Mar. 29, 1901.) v (No Model.) 2 Sheets8heet 2.

Srnrns Farmer FFICE.

GEORGE E. NYMAN, OF EAST \VALPOLE, MASSACHUSETTS, ASSIGNOR TO F. IV. BIRD &: SON, OF EAST WVALPOLE, MASSACHUSETTS, A FIRM.

iViACl-HNE FOR UNiTlNG THE. END'FLAPS OF PAPER BOXES.

SPECIFICATION forming part of Letters Patent No. 710,930,

datedOctober 7, 1 902.

Application filed March 29,1901. Serial No. 53,557. (No model.)

To (tZZ whom, it part7 concern:

Be it known that 1, GEORGE R. \VYMAN, a citizen of the United States of America, residing at East Walpole, in the county of Norfolk and State of Massachusetts, have invented new and useful Improvements in Machines forUniting the Flaps of Paper Boxes, of which the following is a specification.

This invention relates to improved means for gnmming and uniting the end flaps of paper-box blanks, the object of the invention being to provide improved means for guinming and uniting by pressure box end flaps of dimensions too great to be gummed and folded automatically in machines which are successfully employed in the manufacture of boxes of ordinary size, and these ends are attained by means of the construction described in the following specification and clearly pointed out in the claims.

In the drawings forming part of this specification, Figure 1 is an elevation of the rear side of a machine with the gum-box attached for applying gum to the end flaps of boxes and compressing the same and comprising a box-supporting apron at one side of said box embodying my improvements. Fig. 2 is a perspective view of the gum-box and of said apron and of parts of said machine containing the gumming-rollers, illustrating the manner of applying gum to the outer end flaps of a box. Fig. 3 is a perspective View of the front end of the machine and illustrates the manner of applying a box thereto for compressibly uniting the gummed outer and inner end flaps.

Referring to the drawings, 1 indicates the base of the machine, on which is hung for a vibratory motion a flap-pressing lever 24. A shaft 2, supported on suitable standards 6, extends across the rear end of the said base of the machine, on which is secured a balance-wheel 3, a gear 4., and an eccentric 1, on which the friction-roll 1:0 under the rear end of the flap-pressing lever 24: bears. Said eccentric d acts to impart the requisite vibratory movement to said lever, the forward end or short arm of which extends beyond its pivotal connection at as 00 with said base 1 and has a vibratory movement toward and .the gum contained in said box 14:.

tically adjustable for varying thicknesses of end flaps. A second gear 5, near said gear 4 and driven thereby, is supported on a suitable pillar or standard 7 and has a sprocketwheel 8 secured thereon, as shown. A shipping-lever 32 is hung on said base 1 for starting the machine and may be connected with any suitable clutch on said shaft 2, whereby the machine is'started and stopped. At the front end of said base and partly beneath said flap-supporting bed 25 the gum-box la is located and is supported partly on a tubularleg 18 near its outer extremity and is further held by a connecting-bar 19 firmly against said base and suitable fastenings (not shown) between said box and base. Said gum-box is thus located under the gumming and flappressing devices of the machine below described. Ontwoshaft-boxsupportsorbarslti, pivotally connected by one end to said base 1, the gumming-roll 13 is supported on a shaft 10 and is adjustable vertically by a cam-like lever 17 engaging the same, as shown in Fig. 1. On said shaft 10 is a sprocket-wheel, as shown, and on the side of the said gear 5 is the smaller sprocket-wheel S, and a chain 9 serves to connect the said two sprocket-wheels, whereby said gumming-roll 13 is rotated in Connected pivotally to said box supports or bars 16 is a swinging frame 23, supporting the flap-pressing roll 22. A screw 30 and a spring 31 thereon (see Fig. 2) serve to adjust and maintain said flap-pressing roll 22 in operative position relative to the gumming-roll 13, said spring lifting said flap-pressing roll such a distance away from the surface of the gumming-roll 13 as said screw may permit, so that the boxfiap 28 may pass between the roll 13 and the flap-pressing roll 22 while gum is applied to the under side thereof by the roll 13.

In practice sufficient gum is applied to the surface of the outer boxeflap 28 to effect a perfect connection of the latter with'the surfaces of the inner end flaps 29 when the outer box-flap 28 is pressed thereagainst, as described. On the front side of the gum-box let is attached the apron 15, preferably of sheet metal, in the inclined position shown in Fig. 2, against which the end of the box is held from a flap-supporting bed 25, which is verwhile the end flap is passed between the gumining-roll 13 and the flap-pressing roll 22, and

following the roll 13 the box is held, as shown in Fig. 3, with the inner end flaps against the flap-supporting bed 25, while the end of the flap-pressing lever 24 presses the outer boxtlap 28 thereagainst and completes the union of the end flaps.

The operation of the machine is as follows: A box-blank is presented to the gum-rolls,-as shown in Fig. 3, to gum the inside of the end flap on the bottom section 27. The blank, with the end flaps of the side sections thereof folded in under the gummed end flap of the bottom section, is then fitted over the presserbed 25 in the manner shown in Fig. 3 and the machine set in operation by pressure on the treadle 32, whereby the forward arm of the lever 24L is brought down with great pressure on the end flap 28, causing it to adhere to the end flaps 29. The opposite ends of the box are thus operated upon. The covers and the body of the box may be made on the same machine by chan ing the presser-bed to conform to the slightly-increased size of the boxcover, and likewise a similar change in the presser-bed may be made for boxes of different dimensions. By means of this construction boxes of larger dimensions than can be folded in an automatic machine may be very cheaply manufactured.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a machine for applying gum to the flaps of paper boxes and compressibly unitin;. said flaps, a gum-box, a flap-gumming roll supported for rotation in said box, afiappressing roll between which and said gumming-roll the box-flap is passed thereby receiving gum from said last-named roll, a bed to receive the box end, a vibratory flap-pressing lever one extremity of which extends over said bed, and means for operating said lever to press said gummed flap against the box end, and for rotating said gnmming-roll, combined and operating substantially as set forth.

2. In a machine for applying gum to the flaps of paper boxes and compressibly unit ing said flaps, a gum-box, a box-supporting apron attached to said gum-box and extending thereabove toward the gumming-rolls, a fiap-gnmming roll supported for rotation in said box, means for vertically adjusting said roll,- a vertically-adj ustable flap-pressing roll between which and said gumming-roll the box-flap is pressed thereby receiving gum from said last-named roll, a vertically-adjusted bed upon which the box end is laid, a vibratory flap-pressing lever one extremity of which extends over said bed, and means for operating said lever to press said gummed flap against the box end, and for rotating said gumming-roll, combined and operating substantially as set forth.

3. In a machine for applying gum to the flaps of paper boxes and compressibly uniting said flaps,a gum-box, a flap-g11mming roll supported for rotation in said box, a flappressing roll between which and said gumming-roll the box-flap is passed thereby receiving gum from said lastnamed roll, a frame on which said flap-pressing roll is carried, a spring connected with said frame whereby the same is operatively supported, and means for moving the flap-pressing roll toward the gumming-roll against the action of said spring, a bed upon which the box end is laid, a vibratory flap-pressing lever one extremity of which extends over said bed, and means for operating said lever to press the gummed flap against the box end, and for rorating said gumming-roll, combined and operating substantially as set forth.

GEORGE R. \VYMAN.

Witnesses:

FLORENCE E. HOLMES, WM. K. CHURCHILL. 

